The Source of Saturn's Extended Neutral Cloud

Details The Source of Saturn's Extended Neutral Cloud The Source of Saturn's Extended Neutral Cloud

Oct 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010dps....42.2510f&link_type=abstract

American Astronomical Society, DPS meeting #42, #25.10

Astronomy and Astrophysics

Astronomy

Scientific paper

The Enceladus plumes are largely responsible for the water and its by-products found throughout Saturn's Enceladus plasma--neutral torus. In this work, we build on our understanding of the local interaction by quantifying the degree to which neutrals produced as a by-product of charge exchange contribute to the Saturn's neutral cloud extending from 3 to 10 R_S (see also Johnson et al., 2006). We follow individual ion and neutral trajectories, while accounting for velocity-dependent cross sections. Our aim is to compare the neutral clouds resulting from five processes: (1) charge exchange at Enceladus, (2) charge exchange throughout the torus, (3) direct injection from the plumes, (4) photodissociation, and (5) electron-impact dissociation. The goal of the study, when compared with neutral cloud observations, is to shed light on which of these mechanisms dominates the neutral cloud morphology at Saturn.

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